Stitch picking machine



July 19, 1949. G. c. BENNETT 2,475,691

' STITCH PICKING MACHINE Filed Aug. 10, 1945 4 Sheets-Sheet 1 IN VEN TOR.

/wwv a July 19, 1949.

BENNETT STITCH PICKING MACHINE 4 Sheets-Sheet 2 Filed Aug. 10, 1945 INV-ENTOR. eazy fiefine f2 A'ITEI RN EYS July 19, 1949.

' G. c. BENNETT STITCH PICKING MACHINE} 4 Sheets-Sheet 3 Filed Aug. 10, 1945 I N VEN TOR.

lll

ATTCI RN EYS July 19, 1949. s. c. BENNETT STITCH PICKING MACHINE 4 Sheets-Sheet 4 Filed Aug. 10, 1945 ATTD R N EYS Patented July 19, 1949 an? ole-e1 My present invention -relates to iinprovements in threadpickers orremoversand is particul'arly 1 designated to remove the -threads left' inra sh'oe welt aftera sole has-beenwemovedprionto stitching'a new-sole to the wel-t i More particularly; it ismy purposetc provide. a resilient' clamping means-for holding th'ewel-t of a'shoedn position for removal 'of threads and movably supporting the welt in :proximity*-'=with the -picking so that each thread remainingtherein wille'be -picked or removed gquicklm conveniently and fwith little 1abor. Heretofore it has '.=been= :the practiceto use an awl or sharp handtools for: removingremain ing threads fromawelt after a=wornssole has been removed. In removing2-:the= :worn sole} are sharp knife is usually inserted betw'eenxthe worn sole and the .weltto cut the-threadsor stitchingl' This leaves parts. andzvestigeseof lthreadsininthe 'welt and if left in the welt, they at'ezunsightly=an'd un desirable when. a newsoleiis =stitched'ito the welt. The remainin parts:and vestigesnfithe thread in: the welt are usually:invertedaueshaped; and the operation of. picking them-outbv hand isilaborious and time consuming;v My machine: accomplishes simply, quickly and: withmm'appreciable labor the removal of threads from a welt, and there are a no fragile or intricate parts likelyito become deranged or broken ordnap't forusewanwthema chine is simple iniiconstruction sandpractical-in operation.

Other and equally important-objects' and' advantages of my inventiornvvil'l beapparent from the fllowing descriptiorr and 'drawings; and it is pointed out that; changesirr fljrmg size; shape; materials, and construction and arrangement of parts is permissible and-withinth'e purviewbf my broad inventive concept A and the =scope+of the appended claims;

In the drawings--wherein-':=I' 'liave illiistratedapreferred form of -my-=-inventionr;-

Figure 1 is a vertical front elevation:

Figure 2 is a verticalside elevaticrr;

Figure 3 is a section on the dine 3- -3 ofFi ure 1;

Figure l is a section through the' drlving mechanism -forthe brush=,'-'the threadrremoving wheel and the eccentric operatingmechanism for the thread picker;

Figure 6 is :aperspective view-'-of- --'one 0f ms thread picker blades? Figure 7 is a side-view of the camblock-torre turning the thread picker bladeseto passiyemosie tion-g' l V form :2 :formed integral Withthelegsaat theme-.11

dial; portion; thereof. a The legs have integrally 7 formed thereon V above-"and in" vertical 2 relation; with thesplatform 2 the-endplates 3, and a ghandleiand-guard dis connected Wtihathe'endplatesi, atitheaupper endsthereof;

Formed on OHG'Bi'ld plate-aaboverthe platform 2-is4 a bearing 5 for the stub shaft:fi-of'axdrivefi gears'l having a handoperating handle. 8, formed thereon on the. opposite side of the gears by which it. isrotatedn Mountedon a table a :parallel with; andli'rabove the-platform 2 andformed integrals, with;the end platetare the upstandingbearings-e l0 ":betweenlwhich is. journalled a shaft .1 lcarryingaworm; gear I 2 at; the central, pflrt-iomthereen onand a---driven;pinion= l3 on-one endthereof which isgin meshwith the driveigear "i Th'ewvorin gear 2 is in mesh withga gear-l dwhichisa double gear having an annulartoothed area; l5 in-z- 1 wardly ofthegear teeth ,thereonrwhich is in-meshz; With-a-gear l6 on'a'shaft I! whichisgjournalled: at rightgangles tothe gear; 14. The-g eargl l is car-, riedl-on shaft l8 mounted in the guardli in pareallelrelation to shaft l'!,.andshaft ll hasfixed thereto inwardly of the bearings l6 eccentrics.;l9; Shaft I8 is J'ournalled at one endin a. standard end plate -3 and carries a slcttedvpicker blade. roller-72H, with uniformly spacedlslots 2iv in the.

, periphery thereof-seeFig'ur.e 5-.to sliclably ,re-..

ceiVe-thi'ead picker blades 22 therein-see Figure 6.,,' At the forward end'of shaft"! 8 is attached by a screw 23. a toothed sole engaging pressure disc 24" which is prevented from independent rotation" withrespect to the shaft 'by'a-locking'screwfi.

-A sleeve 2 6' is mounted onthe disc 28 andholdsa ure 1. The brushhas a guard-fwinountewon thfi 3 bearing 21. Consequently, it will be seen that on turning the handle 8, the drive gear 1 is rotated and the worm gear l2, also the double gear [4 which rotates shaft I l and pinion gear IS on shaft I! to rotate the slotted picker blade roller and the brush 28.

A block on the bearing 21 on the plate 3 has a cam face 3lsee Figures 7 and 8-which engages the shoulders 32 on the picker blades 22 to normally urge the picker blades to a retracted position back of the front end of the slotted picker blade roller. Each picker blade is flat and has an elongated shank 33 and a sharpened point 34, or as shown in Figure ll-the picker blades may have sharpened knife like ends 35 for cutting threads. The blocks comprise bodies 36 cylindrical part 31 for the bearing 21 as well as the cam face 3|.

Engaging the eccentrics 19 on shaft II is the yoke 38 carried on the picker blade actuating rod i 39. The rod is in two sections connected by a turnbuckle 4i and the threads of the section into the turnbuckle may be 24 threads to the inch and .28 threads to the inch, both right hand threads,

or the difference between the threads may be more or less than the figures given depending on the difierential desired in making fine adjustments of the length of the rod by means of the turnbuckle. The rod 39 extends through the plate 3 and has a slot 41 in the end opposite the threaded end which is engaged by a screw 42 to center the rod while permitting sliding movement in response to the rotation of the eccentrics, and the end of the rod has a blade like plunger which is timed to contact each picker blade 22 as it passes the end of the rod to move it forward on the slotted picker blade roller 20 to a point ad jacent the toothed thread removing disc 24.

Slidably mounted'in a bearing block 43 on the end 3 is a support M for the roller 45. The roller 45 has a flange it and is journalled as at 41 on the top of the support Alli. The support is held in place by plates 65a and has a reduced rod-like extension as at its lower end about which is a spring 9. The spring d9 seats on the lower end of the support i i and against a plate through which the rod extends. The rod carries a nut 5i at its lower end, and the support 44 is normally urged upward by the spring. The plate 50 is slidably mounted in a slot '5flasee Figure 10-for limited sliding movement and is engaged by the cam end 52 of the adjusting lever 53. The lever 53 has a spring dog 54 and an operating handle 55 and upon movement of the same, the plate is adjusted upwardly or downwardly to adjust the tension of the spring 49. A hand lever 56 pivoted at 5'! to the end 3 is pivotally connected as at 58 in a slot 58a in the support 44 to move the support down for the reason which will hereinafter appear.

The flanged roller c5 is below and back of the toothed sole engaging pressure disc 24 and the welt of a shoe is placed on the roller 45 and the roller is moved by spring 49 to engage the welt between the roller 35 and the slotted picker blade roller 20 which places threads to be picked in line 4 turned to passive position after a thread is picked by the cam face of block 30.

From the foregoing, it is believed that the operation and advantages of my invention will be apparent, but it is again emphasized that interpretation of its scope should only be conclusive when made in the light of the claims.

I claim:

1. A thread picking machine, comprising a supporting roller for the welt of a shoe and over which the welt is moved, a toothed sole engaging pressure disc mounted above the supporting roller against which the welt is held by the supporting roller, said supporting roller being mounted for vertical sliding movement, an adjustable ably mounted in the slots, a reciprocating blade actuating rod engaging the blades in step-bystep sequence to pick the threads from the welt, and a rotating brush mounted above and in contact with the-slotted picker blade roller to remove the threads from the blades after the threads have been picked from the welt.

2. The invention as defined in claim 1 wherein the supporting roller is flanged and the welt is held against the flange on the supporting roller.

3. The invention as defined in claim 1 wherein the supporting roller is journalled in a sliding block, a rod on the block, an adjustable plate, and a spring about the rod and engaging the block and plate to urge the roller toward the slotted picker blade roller, cam means for adjusting the plate, and a lever for moving the block against the tension of the spring.

4. The invention as defined in claim 1 wherein the slotted picker blade roller has a plurality of equally spaced peripheral slots in each of which a blade is mounted, a sleeve for holding the blades slidably in cont-act with the roller, and cam means for returning the blades to passive position. after they have been moved to pick a thread.

5. The invention as defined in claim 1 wherein the picker blades are flat and have elongated bodies and end projections against which the cam blade returning block engages and the other ends of the blades having sharpened ends.

6. The invention as defined in claim 1 wherein the toothed sole engaging pressure disc is carried on the end of the slotted picker blade roller, and wherein the brush has a guard.

'7. The invention as defined in claim 1 wherein the reciprocating picker blade actuating rod is sectional, a turnbuckle connecting the sections, the sections having right-handed threads of different pitch to afiect precise adjustment in the length of the rod.

8. The invention as defined in claim 1 wherein the spring adjustment for the supporting roller has an adjusting lever with a cam element, and a latching dog to hold the lever in adjusted position.

9. A thread picker, comprising a picker blade carrying roller, slidable blades on said roller, a reciprocating actuating member for actuating the blades, a toothed sole engaging pressure disc, a rotary brush, the sole engaging pressure -disc mounted on the blade carrying roller, a drive gear, a shaft carrying a pinion engaged by the drive gear to rotate the shaft, eccentrics on the shaft engaging the actuating member to reciprocate the member, a worm gear on the shaft, a double gear having a shaft connection to the blade carrying roller and engaged by the worm, and a REFERENCES. CITED pinion o a, shaft nn tio t th br h d The following references are of record in the engaging the second gear area of the double gear fil f t p nt! to be driven thereby. 5

10. The invention as defined in claim 9 wherein UNITED STATES PATENTS the connection between the rod and the eccen- Number Name Date trics is a yoke having eccentric straps engaging 434,359 360% Aug. 12, 1890 the eccentrics, and wherein the gears and shafts 41 Chateauneuf Ap 1922 are supported by a frame having end plates, 10 1,510,121 W d Sept. 30, 1924 platforms, and a handle. ,4 Becherer Oct. 27, 1925 GEORGE C. BENNETT. 

